Astigmatism is one of the most common vision conditions in the United States. About 1 in 3 Americans has some degree of astigmatism (PMC, 2023). At Insight Vision Optometry, our eye doctors help patients throughout Spring Valley find the right contact lenses to correct astigmatism and see clearly. This guide explains what astigmatism is, how contact lenses fix it, and what to expect during the fitting process.
Astigmatism happens when the front surface of your eye, called the cornea, has an uneven curve. Instead of being round like a basketball, the cornea is shaped more like a football. This irregular shape causes light to focus on more than one point inside the eye.
The result is blurry or distorted vision at both near and far distances. Astigmatism can occur on its own or alongside nearsightedness or farsightedness. It is not a disease but rather a natural variation in the shape of the eye.
In a normally shaped eye, the cornea bends light evenly to create a single point of focus on the retina. With astigmatism, the uneven corneal curve bends light in different directions. This creates two focal points instead of one, which makes images look stretched, blurry, or tilted.
Many people with mild astigmatism may not notice symptoms at first. As the condition becomes more noticeable, you might experience headaches, eye strain, or difficulty seeing clearly at night. An eye exam can measure the exact amount and direction of your astigmatism.
Astigmatism can affect people of all ages, from young children to older adults. Most cases are present from birth and tend to remain stable or change gradually over time. Significant astigmatism, measuring greater than 1.00 diopter, affects about 15 to 20 percent of the population (PMC, 2023).
Risk factors include family history, previous eye injuries, and certain eye surgeries. Some corneal conditions can also cause irregular astigmatism that requires specialized contact lens fitting. Regular eye exams help detect astigmatism early and keep your prescription current.
Several types of contact lenses can correct astigmatism. The best choice depends on the amount and type of astigmatism you have, your lifestyle, and your comfort preferences. Our optometrists will recommend the option that fits your needs.
Toric soft lens prescribing has nearly doubled over the past two decades. It rose from 24.4 percent of soft lens fits in 2000 to 46.2 percent in 2023 (PubMed, 2024). This growth reflects major improvements in lens comfort, stability, and prescription range. Soft toric lenses come in daily disposable, two-week, and monthly replacement options.
GP lenses may be a good option if you have moderate to high astigmatism or need the clearest possible vision. They allow more oxygen to reach the cornea than older hard lenses. The adjustment period for GP lenses is typically longer than for soft lenses, but many wearers find the vision quality worth it.
These lenses can be a good middle ground for patients who want better vision than soft toric lenses provide but find GP lenses uncomfortable. Hybrid lenses work well for moderate to high corneal astigmatism. Our eye doctors can help you decide if hybrid lenses are right for your situation.
Patients with conditions such as keratoconus or corneal scarring often benefit from scleral lenses. These lenses provide stable, comfortable vision even when the cornea has a very uneven shape. Fitting scleral lenses requires advanced training and specialized diagnostic equipment.
Toric lenses have a more complex design than standard spherical contact lenses. Understanding how they work can help you appreciate why a proper fitting is so important for clear, stable vision.
A standard contact lens has the same power across its entire surface. A toric lens has different powers in different zones of the lens. One zone corrects the astigmatism and the other corrects your distance or near vision.
This design means the lens must sit on your eye in a specific position to work correctly. If the lens rotates out of alignment, your vision may become temporarily blurry until it settles back into place. Modern toric lens designs have greatly reduced this issue.
Toric lenses use special design features to stay properly oriented on your eye. Common stabilization methods include weighted zones along the bottom edge and thin sections that interact with your eyelids during blinking.
Your natural blink pattern helps keep the lens in the correct position. Most modern toric lenses rotate very little once they settle on the eye. Our optometrists will check the lens rotation during your fitting to make sure the lens stays aligned.
Toric contact lenses are available in several replacement schedules to match your lifestyle. Daily disposable lenses offer the convenience of a fresh lens each day with no cleaning required. Two-week and monthly lenses cost less over time but require proper cleaning and storage.
Our team will recommend a replacement schedule based on your eye health, comfort needs, and daily routine. Some patients do best with daily lenses, while others prefer the value of longer-wearing options. Following your prescribed replacement schedule is important for keeping your eyes healthy.
A contact lens fitting for astigmatism is more detailed than a standard fitting. Our eye doctors need extra measurements to find lenses that correct your specific type and amount of astigmatism.
Your eye doctor will start with a comprehensive eye exam to check your overall eye health and determine your prescription. For astigmatism, they will also measure the curvature of your cornea using advanced corneal imaging technology.
These measurements show the exact shape of your cornea, including steep and flat areas. The direction and amount of curvature difference help determine your toric lens type. The exam typically takes about 30 to 60 minutes.
After taking measurements, your eye doctor will select trial lenses for you to try. You will wear the trial lenses for a short period while the doctor evaluates how they sit on your eyes. The doctor checks the lens position, rotation, movement, and your vision clarity.
Finding the right fit may take more than one visit. Almost 45 percent of all contact lens wearers have some degree of astigmatism, so eye doctors have extensive experience with toric lens fitting (AOA, 2023). Each adjustment brings you closer to lenses that feel comfortable and provide clear vision.
Once your doctor selects the best lens, you will receive trial lenses to wear at home for several days. This lets you test the lenses during your normal daily activities. Pay attention to how your vision feels at different times of day and during various tasks.
At your follow-up visit, your eye doctor will check the lens fit again and ask about your experience. Adjustments to the lens power or design may be needed. Once both you and your doctor are satisfied with the fit, your final prescription will be written.
While both glasses and contact lenses correct astigmatism effectively, contacts offer some unique advantages that many patients prefer.
Glasses only correct your vision through the lens area directly in front of your eyes. Contact lenses move with your eyes and provide correction across your full field of view. This can make a noticeable difference for people with higher amounts of astigmatism.
With glasses, looking through the edges of the lenses can cause slight distortion, especially with stronger prescriptions. Contact lenses eliminate this issue because the correction stays centered on your eye as you look in different directions.
Contact lenses do not bounce, fog up, or slide down your nose during physical activities. For athletes and active individuals, this makes contacts a practical choice. Many patients with astigmatism find that their peripheral vision improves with contacts during sports.
Contact lenses also work well with standard sunglasses, safety glasses, and sports goggles. You do not need to invest in prescription versions of this eyewear when you wear contacts.
Some patients simply prefer how they look without glasses. Contact lenses provide clear vision without changing your appearance. They also eliminate issues like lens glare in photographs or rain spots on your glasses.
In humid or cold environments, contacts do not fog up the way glasses do. For people who work in kitchens, labs, or outdoor settings, this practical advantage can make a real difference in daily comfort and productivity.
Proper lens care is essential for healthy eyes and clear vision. Toric lenses require the same basic care as standard contact lenses, with a few extra points to keep in mind.
If you wear reusable lenses, clean them every time you remove them. Use only the cleaning solution your eye doctor recommends. Rub the lens gently with solution, rinse it, and place it in a clean case filled with fresh solution.
The following habits help keep your lenses and eyes in good condition.
Daily disposable lenses simplify care because you throw them away at the end of each day. There is no cleaning or storage needed with daily disposables.
Follow the replacement schedule your eye doctor prescribes. Wearing lenses beyond their recommended life span increases your risk of eye infections and reduces lens comfort. Daily lenses should be discarded after one use, while two-week and monthly lenses should be replaced on schedule.
Even if your lenses still feel comfortable, protein deposits and other buildup can affect vision quality and eye health over time. Sticking to your schedule helps prevent complications before they start.
Contact your eye doctor if you notice changes in your vision or comfort. Blurry vision that does not clear after blinking could mean your prescription has changed or your lenses are not fitting properly.
Redness, persistent dryness, or discomfort are signs that something may need attention. Do not ignore these symptoms or try to push through them. An early visit to your eye doctor can prevent minor issues from becoming bigger problems.
While toric contact lenses work well for most patients, some people experience challenges during the adjustment period. Our eye doctors at Insight Vision Optometry have solutions for the most common issues.
The most common challenge with toric lenses is rotation. When a toric lens shifts out of its ideal position, your vision may blur briefly. This usually corrects itself within a blink or two as the lens settles back into place.
If rotation is a frequent issue, our optometrists can try a different lens design with better stabilization for your eye shape. In some cases, switching to a different lens material resolves the problem. Persistent rotation issues are uncommon with modern toric lens designs.
Some contact lens wearers experience dryness, especially toward the end of the day or in the dry Spring Valley climate. This is not unique to toric lenses but can affect any type of contact lens. Lubricating eye drops approved for use with contacts can help relieve dryness symptoms.
If dryness is a regular concern, our team may recommend switching to a lens material that retains more moisture. Daily disposable lenses tend to feel more comfortable throughout the day because they do not accumulate deposits. Our doctors can also evaluate whether an underlying dry eye condition is contributing to your discomfort.
